<!DOCTYPE html><html lang="zh-Hans"><head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1"><meta name="description" content="JavaScript正则匹配示例"><meta name="keywords" content=""><meta name="author" content="kyren"><meta name="copyright" content="kyren"><title>JavaScript正则匹配示例 | Kyren's Blog</title><link rel="shortcut icon" href="/melody-favicon.ico"><link rel="stylesheet" href="/css/index.css?version=1.9.0"><link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/font-awesome@latest/css/font-awesome.min.css?version=1.9.0"><meta name="format-detection" content="telephone=no"><meta http-equiv="x-dns-prefetch-control" content="on"><link rel="dns-prefetch" href="https://cdn.jsdelivr.net"><link rel="dns-prefetch" href="https://hm.baidu.com"><script>var _hmt = _hmt || [];
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<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">var</span> str = <span class="string">&quot;http://bbs.pcauto.com.cn/topic-15113553.html&quot;</span>;</span><br><span class="line"><span class="keyword">var</span> substr = str.<span class="title function_">match</span>(<span class="regexp">/pcauto.com.cn\/topic-(\d*).html/</span>);</span><br><span class="line"><span class="variable language_">console</span>.<span class="title function_">log</span>(substr);</span><br><span class="line"><span class="variable language_">console</span>.<span class="title function_">log</span>(<span class="string">&#x27;匹配id=&#x27;</span>+substr[<span class="number">1</span>]);</span><br></pre></td></tr></table></figure>



<p>OC实现</p>
<figure class="highlight objectivec"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br></pre></td><td class="code"><pre><span class="line"><span class="built_in">NSRegularExpression</span> *regex = [<span class="built_in">NSRegularExpression</span> regularExpressionWithPattern:<span class="string">@&quot;pcauto.com.cn/topic-(\\d*).html&quot;</span> options:<span class="built_in">NSRegularExpressionCaseInsensitive</span> error:<span class="literal">nil</span>];</span><br><span class="line"></span><br><span class="line"><span class="comment">//匹配第一个</span></span><br><span class="line"><span class="built_in">NSTextCheckingResult</span> *result = [regex firstMatchInString:searchText options:<span class="number">0</span> range:<span class="built_in">NSMakeRange</span>(<span class="number">0</span>, [searchText length])];</span><br><span class="line"><span class="built_in">NSRange</span> matchRange = [result rangeAtIndex:<span class="number">1</span>];</span><br><span class="line"><span class="built_in">NSString</span> *matchString = [searchText substringWithRange:matchRange];</span><br><span class="line"><span class="built_in">NSLog</span>(<span class="string">@&quot;searchText=%@&quot;</span>,matchString);</span><br><span class="line"></span><br><span class="line"><span class="comment">//匹配所有</span></span><br><span class="line"><span class="built_in">NSArray</span>* matches = [regex matchesInString:searchText options:<span class="number">0</span> range:<span class="built_in">NSMakeRange</span>(<span class="number">0</span>, [searchText length])];</span><br><span class="line"><span class="keyword">if</span> (matches.count != <span class="number">0</span>)</span><br><span class="line">&#123;</span><br><span class="line">    <span class="built_in">NSLog</span>(<span class="string">@&quot;matches=%@&quot;</span>,matches);</span><br><span class="line">    <span class="keyword">for</span> (<span class="built_in">NSTextCheckingResult</span> *match <span class="keyword">in</span> matches) &#123;</span><br><span class="line">        <span class="built_in">NSLog</span>(<span class="string">@&quot;match=%@&quot;</span>, <span class="built_in">NSStringFromRange</span>([match rangeAtIndex:<span class="number">2</span>]));</span><br><span class="line">        <span class="built_in">NSRange</span> matchRange = [match rangeAtIndex:<span class="number">1</span>];</span><br><span class="line">        <span class="built_in">NSString</span> *matchString = [searchText substringWithRange:matchRange];</span><br><span class="line">        <span class="built_in">NSLog</span>(<span class="string">@&quot;matchString=%@&quot;</span>, matchString);</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

</div></article><div class="post-copyright"><div class="post-copyright__author"><span class="post-copyright-meta">文章作者: </span><span class="post-copyright-info"><a href="mailto:undefined">kyren</a></span></div><div class="post-copyright__type"><span class="post-copyright-meta">文章链接: </span><span class="post-copyright-info"><a href="http://huluo666.gitee.io/2018/03/05/JavaScript正则匹配示例/">http://huluo666.gitee.io/2018/03/05/JavaScript正则匹配示例/</a></span></div><div class="post-copyright__notice"><span class="post-copyright-meta">版权声明: </span><span class="post-copyright-info">本博客所有文章除特别声明外，均采用 <a target="_blank" rel="noopener" href="https://creativecommons.org/licenses/by-nc-sa/4.0/">CC BY-NC-SA 4.0</a> 许可协议。转载请注明来自 <a href="http://huluo666.gitee.io">Kyren's Blog</a>！</span></div></div><div class="post-meta__tag-list"></div><nav id="pagination"><div class="prev-post pull-left"><a href="/2018/03/07/Xcode%E6%89%A9%E5%B1%95%E5%BC%80%E5%8F%91%E4%B9%8Bnode.js:python%E8%AF%BB%E5%8F%96%E6%9C%AC%E5%9C%B0%E6%96%87%E4%BB%B6/"><i class="fa fa-chevron-left">  </i><span>Xcode扩展开发之node.js/python读取本地文件</span></a></div><div class="next-post pull-right"><a href="/2018/03/02/AFNetWorking3.x%E4%BD%BF%E7%94%A8/"><span>AFNetworking3x使用</span><i class="fa fa-chevron-right"></i></a></div></nav></div></div><footer><div class="layout" id="footer"><div class="copyright">&copy;2022 By kyren</div><div class="framework-info"><span>驱动 - </span><a target="_blank" rel="noopener" href="http://hexo.io"><span>Hexo</span></a><span class="footer-separator">|</span><span>主题 - </span><a target="_blank" rel="noopener" href="https://github.com/Molunerfinn/hexo-theme-melody"><span>Melody</span></a></div><div class="footer_custom_text">hitokoto</div><div class="busuanzi"><script async src="//busuanzi.ibruce.info/busuanzi/2.3/busuanzi.pure.mini.js"></script><span id="busuanzi_container_page_pv"><i class="fa fa-file"></i><span id="busuanzi_value_page_pv"></span><span></span></span></div></div></footer><i class="fa fa-arrow-up" id="go-up" aria-hidden="true"></i><script src="https://cdn.jsdelivr.net/npm/animejs@latest/lib/anime.min.js"></script><script src="https://cdn.jsdelivr.net/npm/jquery@latest/dist/jquery.min.js"></script><script src="https://cdn.jsdelivr.net/npm/@fancyapps/fancybox@latest/dist/jquery.fancybox.min.js"></script><script src="https://cdn.jsdelivr.net/npm/velocity-animate@latest/velocity.min.js"></script><script src="https://cdn.jsdelivr.net/npm/velocity-ui-pack@latest/velocity.ui.min.js"></script><script src="/js/utils.js?version=1.9.0"></script><script src="/js/fancybox.js?version=1.9.0"></script><script src="/js/sidebar.js?version=1.9.0"></script><script src="/js/copy.js?version=1.9.0"></script><script src="/js/fireworks.js?version=1.9.0"></script><script src="/js/transition.js?version=1.9.0"></script><script src="/js/scroll.js?version=1.9.0"></script><script src="/js/head.js?version=1.9.0"></script><script src="/js/search/local-search.js"></script><script>if(/Android|webOS|iPhone|iPod|iPad|BlackBerry/i.test(navigator.userAgent)) {
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